Staple binder



Patented Mar. 25, 1924.

ldddASd UNETEE glATES FATENT QFFECE,

BERTHOLD JAHN AND ERNEST EI /IIL KAHL, OF NEW BRITAIN, CONNECTICUT, AS- SIGNORS TO THE B. JAI-IN MANUFACTURING COMPANY, OF NEW BRITAIN, CON- NECTICUT, A CORPORATION.

STAPLE BINDER.

Original application filed November 25, 1916, Serial No. 133,357. Divided and this application filed March 19, 1920.

To all whom it may concern.

Be it known that we, BERTHOLD J AHN and ERNEST EMIL KAHL, citizens of the United States, residing at New Britain, in the county of Hartford and State of Connectiout, have invented certain new and useful Improvements in Staple Binders, of which the following is a specification.

Our invention relates to improvements in staple binders, and particularly to certain features that are shown and described in our application filed November 25, 1916, Serial No. 133,357, of which this application is a division and the object of our improvement is to provide means that are simple and reliable for elevating the pawls that normally bear on the die member and are adapted to engage with the staples of the staple strip for holding and feeding, such means being incorporated in the general structure so as to be available and accessible at all times.

In the accompanying drawing Figure 1 is a side elevation of our improved staple binder.

Figure 2 is a plan view of the same.

Figure 3 is a sectional view, on an enlarged scale, on the line 3-3 of Fig. 2. I

Figure 4 is a similar view showing the parts in a different position.

Figure 5 is a plan view .of the blank for the feeding pawl.

Figure 6 is a plan view of the blank for the holding pawl, provided with a handle that is operated for elevating the two pawlst Figure 7 is a sectional view on the line 77 of Fig. 2.

Our improved staple binder comprises a base 10 that is made of shell-like form of sheet metal and has adjacent the front end a part 11 that serves as an anvil; a frame structure 12 hinged to the rear end portion of the base 10 by means of a pivotal pin 13; and mechanism operatively housed in the frame structure 12 for operating on staples 1 1, supplied in strip form, as is usual,'and inserted in,

the frame, and for cooperating with the anvil 11. v

The said mechanism comprises a plunger member 15 that is operatively housed in the frame structure 12 and cooperates with a die 16 that is incorporated in the said frame structure that serves to sever individual Serial No. 367,239.

The blank for the base 10 is pressed up- I v wardly so as to provide a central and relatively elevated plateform 17 that is bordered on all sides by a flange-like side wall structure 18. At the anvil end the material is further pressed upwardly to provide a diminutive platform that serves as the anvil 11 and the said diminutive platform or anvil 11 is provided with a pair of depressions 19 of curved form that register with the points of the staples 14: and that serve in cooperation with the plunger member 15 to turn the said points and finally to efiect the clenching of the staples.

At the rear end the platform 17 is provided with a pair of slots in which are housed the upwardly projecting arms 20 of the pivot supporting member 21 and has between the said arms 20 a hole for the rivet 89 for holding the said pivot supporting member 21 in place, as will be described.

The pivotal connection between the base 10 and the frame structure 12 is effected through the medium of the pivot support. ing member 21 and a die member 23 that.

is incorporated in the lower part of the frame structure, the said die member having sheet material bent into U-shape so as to form the two upstanding arms 20 that are connected together by their lower ends by means of the yoke portion 22 and is placed in position by having the arms 20 inserted through the slotsprovided therefor in the platform 17 from the under side thereof, so that the connecting yoke portion 22 is brought into abutment with the under face of the said platform 17. The parts are secured together by means of the rivet 89 that extends through the yoke 22 and through the hole in the platform 17 mentioned.

The die member 23 is in the form of an elongated block that extends from the pivotal connection at 13 forwardly over the platform 17 up to adjacent the anvil 11, 1s of appreciable length, suitably to receive the staple strip, and has the portion 24 on the upperside recessed at the sides so as to provide an operative fit for the under side of the staple strip.

A pair of studs 64 extend through the lower portion of the die member 23 and have ends projecting on each side for engagement with the side frame members 25- for positioning these parts.

A hole 26 is provided in the die member 23 for the screw 27 that serves as one of the frame screws for holding the side frame members 25 in place.

The front end portion 16 of the die member 28 servesas the die 16 mentioned for cooperating with the plunger 15.

The plunger 15 is operatively housed 1n the frame structure 12 in any proper manner, has a handle 40 at the upper end, and

a spring 43 between the said handle and the frame tends to hold the plunger in the elevated position. A wing-like flange 44 is provided on the rear face of the plunger 15 for cooperating with the operating mechanism that is housed in the frame 12.

As shown, inwardly directed flanges 42 on the side frame members 25 cooperate with grooves 41 in the plunger 15 for guiding the plunger.

The said mechanism comprises a dog 52 that is pivotally supported from the frame 12 by means of a pin 55 and cooperates directly with the wing-like flange 44, a feeding pawl 51 that is pivotally supported from the dog 52 by means of a pivotal pin 53, and

I a holding pawl 48 that is pivotally supported from the frame 12 by means of a pin 49.

A spring 54 is also provided for opera tively connecting the feeding pawl 51 and the dog 52, and tends to hold the said pawl in contact with the die member 23.

A positioning spring 50 mounted on the pivotal pin 49 and having engagement with the frame 12 tends to hold the holding pawl 48 in contact with the die member. 23.

The frame 12 comprises the die member 23 along the bottom and a pair of side frame. members 25 positioned on the sides, being held in proper relation by means of the studs 64 and a set of screws, consisting of the screw 27, already mentioned, that eX- tends through the hole 26 in the die member 28, a second screw 63 adj acen't the upper portion and a third screw 65 adjacent the rear end portion.

The side frame members 25 are generally similar, are made of sheet metal, of approximately triangular form, the front edges being formed to provide the inwardly direct- 1 ed guide flanges 42, the body portions being flat and in spaced relation suitably to prothe wings 83.

naeaeso vide a housing for the interior mechanism, and opposed inwardly directed flanges 58 that meet along the medial line serving as a closure for the top andrear portions of the structure. The saidbody portions serve as the supports for the pivotal pin 55 for; the dog 52 and for the pivotal pin 49 for the holding pawl 48.

The feeding pawl, as shown, is formed of sheet metal so as to provide a channel for the dog 52, composed of a pair of side wings 83 interconnected by their lower edges by the relatively narrow body portion 85, the wings 83 being extended forwardly to provide the teeth 8?, which, as shown. in the blank in Fig. 5, are separated by the space 86 in line with the body portion 85. The wings 88 also have holes 84 for the pivotal pin 53. The teeth 87 are off-set'outwardly relatively to the wings 88, the material being bent adjacent the line 88 as indicated in Fig. 5, so that the teeth 87 are-outside of the teeth on the holding pawl.

The feeding pawl operates to feed the staple strip responsive to movement of the plunger 15, and the holding pawl 48 engages with the staple strip so as to prevent retrogade movement thereof.

The holding pawl 48, the blank for which is shown in Fig. 6, is made of sheet material and comprises an elongated and relatively narrow body portion 79 that is provided at the front end portion with a pair of teeth 80 at the side edges, has the rear endportion 74 shaped suitably to serve as a handle, and has adjacent the middle a pair of side Wings 81 positioned one on each side, each of which has a hole 82 for the supporting pivot pin 49. The teeth 80 are turned downwardly relatively to the. adjacent body'portion 79 and the wings 81 are turned upwardly to form a channel for housing the spring 50 and receiving th shaft or pin 49. r

The teeth 80 and the adjacent part ofthe body portion 79 are positioned generally in the space 86 between the teeth 87 on the feeding pawl 51 and the body portion 79 crosses the junction portions 88 intermediate the teeth 87 and the body portions of Thus the holding pawl 48 is constructed and arranged so as to'be adapted to engage with the feeding pawl 51 so as to elevate the teeth 87 from the die member 23 whenever the said holding pawl 48 may be tilted away from the die member 23. Means for so tilting the holding pawl 48 are provided in the handle 74, which} is directed in a suitable manner to extend through an opening 75 that is provided,

therefor in the back wall of the frame 12. As shown, the opening 7 5 is formed by cutting away portions of the opposed flanges 58, and is provided in a por ion 59 of the said back wall that is generally inclined atan appreciable angle to the horizontal.

As described, the pawls are lifted by; pressing downwardly on the handle 7 4:, and the springs restore the parts to the normal position after the handle is released.

We claim as our invention:

1. In a stapling machine, a main casing provided with an interior recess, a plunger passing therethrough, a pivoted staple-feeding means, a pivoted staple-holding means beneath said staple-feeding means and adapted to engage said staple-feeding means by upward movement, the said staple-holding means being freely movable on its shaft and being provided with an integral arm extending rearwardly through an opening in the casing and constituting a handle which is arranged and located to be grasped by one hand simultaneously with said casing, thereby simultaneously releasing both the staple-feeding and the staple-holding means.

2. In a stapling machine, a main casing provided Withan interior recess, a plunger adapted to engage said staple feeding means,

said staple holding means being freely pivoted and provided with actuating means extending through an opening in the casing and arranged to be grasped by one hand simultaneously with. said casing, thereby simultaneously releasing both the staple feeding and staple holding means.

BERTHOLD J AHN. ERNEST EMIL KAHL. 

